But that doesn’t mean you shouldn’t do *something*. There is one very important bit of information to have – the names of the applications that run against your SQL Servers and who wrote them. Versions would also be useful; but at least know the applications you have and whether they are from an Independent Software Vendor (ISV) or whether your developers wrote them (also called in-house). In an emergency or in Business Continuity planning, and even in sizing and licensing, this is invaluable.